diff --git a/Misc/ACKS b/Misc/ACKS
index 19c7e43..5d7181d 100644
--- a/Misc/ACKS
+++ b/Misc/ACKS
@@ -723,6 +723,7 @@
 Gerhard Häring
 Fredrik Håård
 Florian Höch
+Robert Hölzl
 Catalin Iacob
 Mihai Ibanescu
 Ali Ikinci